The new compound (4 R )-methyl-3-(1-(4-chlorophenyl)-1 H -1,2,3-triazole-4-carbonyl)thiazolidin-4-carboxylate was synthesized by the 1,3-dipolar cycloaddition reaction between (4 R )-methyl-3-propionyl-thiazolidin-4-carboxylate ( 1 ) and 4-chlorophenylazide using the click chemistry approach. Molecular characterization was carried out by infrared spectroscopy and mass spectrometry. The X-ray powder diffraction study determined that the title compound crystallized in an orthorhombic system with unit-cell parameters a = 20.876 (2) Å, b = 12.111 (1) Å, and c = 6.288 (9) Å. The volume of the unit cell is V = 1589.7 (2) Å 3 . All measured diffraction maxima were indexed and are consistent with the P 222 1 space group (No. 17). No detectable impurities were observed.